Brother HL-1040 - Page 21

II-5
Fig. 2-5 shows the block diagram of the main PCB.
Reset Circuit
Program + Font ROM
512 Kbytes
RAM
(2.0 Mbytes)
Option Serial I/O
(RS232C & RS422A)
EEPROM (128 8 bits)
CPU Core
(MC68EC000)
A S I C
Oscillator (15.3MHz)
Address Decoder
DRAM Control
Timer
FIFO
DATA EXTENSION
CDCC Parallel I/O
Soft Support
EEPROM I/O
Engine Control I/O
Motor Driver
To Panel Sensor PCB
BUS
INT
To PC
Fig. 2-5
HL-1040